therma patch

They target joints (elbows, wrists, knees) and larger areas such as the back, neck, shoulders, and abdomen.

They activate on contact with air and do not require batteries or wires.

Sizes include S/M and a large 8" x 14" option. The S/M size is described as a flexible, contoured fit for various body areas.

Product details report continuous therapeutic heat for up to 8 hours.

Options include single-use heat patches/wraps and reusable cold wraps with adjustable straps. Some heat wraps are designed to adhere to clothing or underwear.

The cold wrap is described as reusable. Several heat wraps and patches are single-use and are marked to discard after use.